in units of M_⊙ vs. the 8–1000 μm infrared luminosity L_IR in units of L_⊙. The objects are Sy1 and Sy2 from R21 (Riffel et al. 2021) and ULIRGs from D03 (Davies et al. 2003) and PL12 (Piqueras López et al. 2012). No extinction correction has been applied, except for PL12 ULIRGs (open orange diamonds; PL12 corr.). The same extinction as the ionised gas has been assumed (Piqueras López et al. 2013). 4C12.50 is plotted as a red diamond. The observed and extinction corrected masses are very similar in this case. The size of the symbol is similar to the errorbar. The large black and green solid circles (in an almost identical location) are the median of the Sy1 (small black circles) and Sy2 (small green circles) values. The dotted black line shows the best fit to all solid data points (this is, the masses not corrected for extinction).